BuddyPress.org

Hi,
I’m learning BP and wonder if i can use bp_ functions in static wordpress sites.
The site works fine but… I’ve created page “Test” wich id is 40 and in my theme folder i’ve created file “page-40.php” in this file i’m loading header-buddypress.php instead of header.php but i cannot access functions like `bp_displayed_user_avatar()` or `bp_members_component_link(‘profile’, ‘public’)`. Is there a way to make this stuff works?